Door latch



FIG. 1 is a perspective view of our new design for a door latch;

FIG. 2 is a left side view thereof, the right side view being a mirror image thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a rear side view thereof; and,

FIG. 6 is a front side view thereof.

The broken lines are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a door latch, as shown and described. 